DomainContext.Load Method (EntityQuery, LoadBehavior, Action<LoadOperation>, Object)
[WCF RIA Services Version 1 Service Pack 2 is compatible with either .NET framework 4 or .NET Framework 4.5, and with either Silverlight 4 or Silverlight 5.]
Initiates a load operation for the specified query with the specified load behavior, callback method, and user state.
Namespace: System.ServiceModel.DomainServices.Client
Assembly: System.ServiceModel.DomainServices.Client (in System.ServiceModel.DomainServices.Client.dll)
Syntax
'Declaration
Public Overridable Function Load ( _
query As EntityQuery, _
loadBehavior As LoadBehavior, _
callback As Action(Of LoadOperation), _
userState As Object _
) As LoadOperation
'Usage
Dim instance As DomainContext
Dim query As EntityQuery
Dim loadBehavior As LoadBehavior
Dim callback As Action(Of LoadOperation)
Dim userState As Object
Dim returnValue As LoadOperation
returnValue = instance.Load(query, loadBehavior, _
callback, userState)
public virtual LoadOperation Load(
EntityQuery query,
LoadBehavior loadBehavior,
Action<LoadOperation> callback,
Object userState
)
public:
virtual LoadOperation^ Load(
EntityQuery^ query,
LoadBehavior loadBehavior,
Action<LoadOperation^>^ callback,
Object^ userState
)
abstract Load :
query:EntityQuery *
loadBehavior:LoadBehavior *
callback:Action<LoadOperation> *
userState:Object -> LoadOperation
override Load :
query:EntityQuery *
loadBehavior:LoadBehavior *
callback:Action<LoadOperation> *
userState:Object -> LoadOperation
public function Load(
query : EntityQuery,
loadBehavior : LoadBehavior,
callback : Action<LoadOperation>,
userState : Object
) : LoadOperation
Parameters
- query
Type: System.ServiceModel.DomainServices.Client.EntityQuery
The query to invoke.
- loadBehavior
Type: System.ServiceModel.DomainServices.Client.LoadBehavior
The LoadBehavior to apply.
- callback
Type: System.Action<LoadOperation>
Optional callback to be called when the load operation completes. The callback must be a delegate taking a single parameter that can accept an instance of the LoadOperation Type returned.
- userState
Type: System.Object
Optional user state.
Return Value
Type: System.ServiceModel.DomainServices.Client.LoadOperation
The load operation.
Exceptions
| Exception | Condition |
|---|---|
| [ArgumentNullException] | query is nulla null reference (Nothing in Visual Basic). |
| [InvalidOperationException] | The query was not created by this domain context. |